1、e MIL-F-20420J (4) 9999906 1845278 224 D I INCH-POUND I MIL-F-2042OJ(AR) AMENDMENT 4 12 March 1993 SUPERSEDING AMENDMENT 3 20 May 1991 MILITARY SPECIFICATION FLARE, SURFACE, TRIP M49A1, PARTS, AND LOADING, ASSEMBLING AND PACKING This amendment forms a part of MIL-F-20420J(AR), dated 25 March 1983, a
2、nd is approved for use by the U.S. Army Armament, Munitions and Chemical Command and is available for use by all Departments and Agencies of the Department of Defense, PAGE 1 2.1.1 Delete: “FEDERAL QQ-P-416 - Plating, Cadmium (Electro deposited)“. PAGE 3 2.2 Add new paragraph as follows: “2.2 Non-Go
3、vernment publications, The following document(s) form a part of this document to the extent specified herein. unless otherwise specified, the issues of the documents which are DOD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of
4、 documents not listed in the DODISS are the issues of the documents cited in the solicitation. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM - B117 “STANDARD METHOD OF SALT SPRAY (FOG) TESTING“ (Application for copies should be addressed to the American Society for Testing and Materiais, 19
5、16 Race Street, Philadelphia, PA 19103.)“ 3.5.2 Cold temperature: Add the phrase, “except that the pull pin force requirements do not apply.“ to the last sentence. 3.5.3 Delete: “Temperature and Humidity Cycling“ and substitute “Temperature and Humidity Cycling (First Article Only) “. AMSC N/A 1 of
6、12 FSC DISTRIBUTION S TATEMFNT A. Approved for public release; distribution is unlimited. 137 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-20420J (4) 9999906 II845279 IIbO MIL-F-2042OJ(AR) AMENDMENT 4 PAGE 5 Table I: Change the number of sam
7、ple units on each of the items on the first page of Table I from “25“ to “10“. PAGE 6 Table I: Change the number of sample units on each item on the second page of Table I from “25“ to “10“. PAGE 7 Table I: Paragraph Reference for the Flare Assembly Examination of Defects: Change from 4.4.2.19“ to 4
8、.4.2.19, 4.4.2.20, 4.4.2.21 and 4.4.2.22 (except 105 thru 109)“. - “4.4.2.18, a jor defect Change the number of sample units for the examination of defects for the Trigger Spring, Retainer Spool, and the Wire Spool Assembly from “25“ to “10“. PAGE 9 4.4.2.1 Delete major defect 102 and Substitute: “1
9、02 Thickness of bottom excluding angular surface, min. 0.40% 3.2 Gage“. Delete major defect 105 and minor defect 202 in their entirety. PAGE 10 4.4.2.2 Delete major defect 109 and substitute: “109 Angle Add major defect 110: “110 Protective coating test 4.4.3.7, of turn-up at end of handle, min, 0.4
10、0% 3.2 Gage“. 4.4.3.7, 3.2, 4.4.3.7“. Delete minor defects 204, 205, and 206 in their entirety. PAGE 11 4.4.2.2 Add minor defects: “214 Presence of dimple (2 places) 0.65% 3.2 Visual“. “215 Height of turn-up at end of handle, min. 0.653 3.2 Gage“. Delete minor defects 208, 209, 210, and 211 in their
11、 entirety. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-20420J (4) Ob LB45280 982 MIL-F-2042OJ(AR) AMENDMENT 4 PAGE 12 4.4.2.3 Delete major defect 103 and substitute: “103 Location of firing pin hole 0.40% 3.2 Gage“. Delete minor defect 20
12、3 in its entirety. PAGE 13 4.4.2.4 Delete major defect 101 and Substitute: “101 Location of pont 0.40% 3.2 Gage“. Delete major defect 103 and substitute: “103 Point profile damaged 0.40% 3.2 Gage“. Add major defeck 105: “105 Protective coating test 4.4.3.7 4.4.3.7 3.2 4.4.3.7“. PAGE 15 4.4.2.6 Delet
13、e minor defect 201 and substitute: “201 Length from top edge of bracket to top edge of slot 0.65% 3.2 Gage“. Delete minor defect 203 and substitute: “203 True position of carriage bolt holes (round and square) 0.65% 3.2 Gage“. Delete minor defect 204 and substitute: “204 True position of trigger piv
14、ot hole 0.65% 3.2 Gage“. Add Note 1 callout to minor defect 205. Delete minor defect 207 and substitute: “207 Width of mounting surface, min 0.65% 3.2 Gage“. Add the following under notes: “1 Surface imperfections which cause the local material thickness to be below minimum shall be classed defectiv
15、e, Cracks appearing on the top lugs or the tabs of the “E“ slot will not be permitted.“ 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-20420J (4) 9999906 L84528L 819 Ec MIL-F-2042OJ(AR) AMENDMENT 4 PAGE 16 4.4.2.7 Add major defect 106: “106
16、Protective coating test 4.4.3.7 4.4.3.7 3.2 4.4.3.7“. Add Note 1 callout to major defect 104. Add the following under notes: 1 Surface imperfections in the finger area which result in a local thickness or width that is less than the minimum required shall be class-d defective.“ PAGE 18 4.4.2.9 Add m
17、ajor defect 102: “102 Protective coating test 4.4.3.7 4.4.3.7 3.2 4.4.3.7“. PAGE 19 4.4.2.10 Delete major defect 101 and substitute: 101 Diameter of wire .(before forming) 0.40% 3.2 Gage“. PAGE 20, 21 and 23 Delete in their entirety and substitute new page 20, 21 and 23 included. PAGE 22 4.4.2.13 De
18、lete major defect 101 and substitute: “101 Diameter of press fit surface 0.40% 3.2 Gage“. Delete major defect 102 and substitut?,: “102 True position of hinge pin hole(s) 0.40% 3.2 Gage . Delete major defect 105 and substitute: “105 Length from primer hole to lever forward pivot 0.40% 3.2 Gage. Dele
19、te major defect 113 and substitute: “113 Length of press fit surface to taper 0.40% 3.2 Gage“. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Y- MIL-F-20420J (4) = 0b 1845282 755 = z O B U W pi m z W U z 4 f: !x O cri z O U w P d 4 3 a H n H 8 E l
20、i Li u) Y .?I Li w CA - P c -4 Li a t/3 mwhl CUCVCU CUhlCVNCVCV03 . . . . . . . . . mmm mmm mmmmmmm r- m dPW 6pwdPwopww mLnm LnInmLnvIIno 44- WWW WDIDDIDWWWC oow O00 ooooocrl . . . . . . . . II FI O Li U 5 rl la c O -4 Ul c .d TI W O TJ O c U Y E 8 U - i MIL-F-20420J (4) m 99999Ob 184528b 3T0 m MIL-
21、F-2042OJ(AR) AMENDMENT 4 PAGE 43 4.4.3.3.3: Delete in its entirety. 4.4.3.3.3.1: Delete in its entirety. 4.4,3.3.3,2: Delete in its entirety, 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-E E c z o I3 U w Pl u z !-I a Y (ic Y H o P U z a: 5: 8 MI
22、L-F-20420J (4) m 999990b 18r)5287 237 D Li Y c u) Li Y D F -4 u B O m P4 * * - , . ,. . . ,. . mm OD mm m r- mdP * .o O ww O wo d .* I- m d u v) Y uc -rl DE c -4 - a AJLi -4 (IIY c OAJ u) c (II *(II .rl -u: u AJ o va 3 aJTJ u .4 u ow O O DJH Pl FI (II u -4 u -4 Li u Provided by IHSNot for ResaleNo r
23、eproduction or networking permitted without license from IHS-,-,-I c flIL-F-20420J (4) W 9999906 1845288 L73 MIL-F-2042OJ(AR) AMENDMENT 4 I PAGE 45 4.4.3.7: Delete paragraph in its entirety and substitute the following : “4.4.3.7 Protective coating (salt-spray) test of clip, safety assembly (dwg. 88
24、369581, lever (dwg. 8836961) , cove (dwg. 8836965), striker assembly (dwg. 8836971) I pivot I trigger (dwg. 8836976) , washer, trigger (dwg. 8836977) I trigger (dwg. 8836974), spring, trigger (dwg. 8836975), spring striker (dwg. 886 4755) , and spool retainer - major aefects. Testing shall b e perfo
25、rmed after application of all specified protective finishes. The salt Spray Test shall be conducted in accordance with ASTM B117, Standard Method of Salt Spray (Fog) Testing,“ ?or a period of 96 hours, To secure uniformity of test results, all test samples shall be aged at room temperature for 24 ho
26、urs before being subjected to the Salt Spray. A quantity of four parts from each production lot shall be used as the test samples in lieu of specimens. The salt spray tested samples shall show no evidence of white corrosion products (if cadium or zinc is present) or base metal corrosion products at
27、the end of the 96 hour test, The appearance of corrosion products (visible to the unaided eye at normal reading distance) on one or more the test samples shall be cause for rejection, except that corrosion products at the edge of an unprotected area shall not be cause for rejection I PAGE 46 Change
28、title of paragraph 4.5.3.1 from “Baffle and asbestos: to: “Baffle“. PAGE 47 4.5.4.2: Add new last sentence: “Pull pin force shall be recorded for information only. 4.5.4.3: Delete “Temperature and Humidity Cycling. The fiare . (Destructive test )“ avmperature and Humidity Cycling (First Article Only
29、). The flare. (Destructive test). Pin pull force shall be recorded for information only, PAGE 48 Change title of paragraph 4.5.9.1 from; “Intermediate change and first composition“ to “Intermediate charge and first fire comDosition“. 11 Provided by IHSNot for ResaleNo reproduction or networking perm
30、itted without license from IHS-,-,-MIL-F-20420J (4) 999990b 1845289 OOT MIL-F-20420J(AH) AMENDMENT 4 PAGE 50 Delete paragraph 4.5.10 in its entirety. Add the following paragraph: 4.5.13 Dimensional control of formed parts, In place of the normal sampling associated with the Classification of Defects
31、, and with the approval of the Contracting Officer, a sample of at least ten (10) parts shall be dimensionally inspected to qualify the tool used in the forming process for use in production. In addition, a random sample of five (5) parts shall be selected from the last portion of each days producti
32、on for dimensional inspection as a control of the tool during production. If any defective parts are found during qualification of the tool, the tool producing the defective part shall not be used in production. If any defective parts are found when inspection is performed for control of the tool, t
33、he tool producing the defective park shall be removed from production. Further, that portion of production since the last tool control check shall be returned to the contractor for corrective action. All tools removed from production because of some fault, may after reworking, be returned to product
34、ion providing they pass the qualification test above. The contractor may request a change of inspection frequency providing he presents objective evidence to the Contracting Officer .“ The margins of this amendment are marked with an asterisk or vertical lines to indicate where changes (additions, m
35、odifications, corrections, deletions) from the previous amendment were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relation to the last previous amendment, Cu st odi an : Army-AR 12 Preparing activity: Army-AR (Project: 1370-A347) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
